Do you have the log file? If yes, appreciated if you can upload the log files (vm-support or serial log), so that we can forward to developers for help.
The plot thickens. I have checked my bios in more detail. Please look at the attached photo. BIOS is showing "Installed Memory: 4096MB" but "System Memory is 3072MB". I am guessing that this is why ESXi only picks up 3GB. I also booted the System with a Fedora 11 (x64) CD. Fedora can only detect 3GB.
I found this other thread that I will check: http://communities.vmware.com/message/1135740;jsessionid=0772DE35067BB9466ECBB10C12BD42BC
I suspect this might be a limitation of the machine itself. I might have to contact IBM for further info. Unless anyone got any other ideas?
622527G-only 3GB.jpg 103.3 K
Agree with you!
ESXi4.0 support 4GB memory definitely.
It is a hardware related x86 memory addressing limitation.
I am not convinced. The CPU in this machine have the following spec - "3.6GHz Intel® Pentium® 4 microprocessors with 800MHz front-side bus, 1MB L2 cache, and Extended Memory 64 Technology (EM64T)". That to me looks like a proper 64bit CPU which should be able to handle the full 4GB. Maybe I am missing something? Can you please elaborate?
Link to System Overview:
Looks like your BIOS gives the answer.
You have 4Gb RAM installed but only 3Gb is available.
Probably you have a vga-card (onboard?) with shared memory, which takes the missing 1Gb RAM...